Illustration
Snapdragon
Antirrhinum
Snapdragon blooms from May through September.
Months here are Northern Hemisphere months; in the Southern Hemisphere, shift them by six months.
Growing Snapdragon
Plant it in full sun. It prefers moderate water. Expect it to reach about 2.5 ft tall and 1 ft wide at maturity, in roughly 1 year (not yet checked).
What was checked
Mature height and spread, hardiness zones, sun and the trait tags were checked against named botanical sources for this plant. The bloom months and water need on this page were not, and each fact above says which. The planting, spacing and size sections are derived from these checked facts by a fixed rule, not checked separately, and the plant type is the library's own classification.
When to plant Snapdragon
Wait until all danger of frost has passed, then plant out Snapdragon into warm soil; in most zones that means late spring. Planted then, it flowers from May to September.
Month-by-month timing for your zone is on the planting calendar. Derived from the plant's category, zones and bloom months plus typical zone frost dates, not checked separately.
How big does Snapdragon get?
2.5 fttall5 ft 7 inan adult1 ftwideSee Snapdragon in a garden plan: the planner shows it in 3D beside everything else you add, growing toward this size over the years.
How far apart to plant Snapdragon
Derived from the mature spread above by a fixed rule, not checked separately: spacing is the spread, center to center.
Space Snapdragon about 1 ft apart, center to center, so each plant has room to reach its full width.
Add Snapdragon to a garden plan and the planner draws it at its full width, so you see the spacing before you buy.
Where these facts come from
Snapdragon's height, spread, hardiness zones, sun and trait tags were checked against 8 published sources on July 30, 2026. Each one is linked below with every fact it carried, which can include a fact this page still marks as not yet checked, because a source carrying a value is not the same as the value being held to the standard. Facts not in that list, and the planting, spacing and size sections, are not covered by these sources.
- edis.ifas.ufl.eduUniversity of Florida IFAS Extension EDIS FPS-44 (Antirrhinum majus Sn...height, spread, hardiness zones, sun, years to mature size and trait tags
- NC State ExtensionAntirrhinum majusheight, spread, hardiness zones, sun, years to mature size and trait tags
- Missouri Botanical GardenAntirrhinum majusheight, spread, hardiness zones, sun and trait tags
- Missouri Botanical GardenAntirrhinum 'Dulcinea's Heart'height, spread, hardiness zones, sun and trait tags
- Missouri Botanical GardenAntirrhinum majus SNAPTASTIC ORANGE FLAMEheight, spread, hardiness zones, sun and trait tags
- University of Georgia ExtensionB954, Flowering Annuals for Georgia Gardensheight, sun and trait tags
- Swallowtail Garden SeedsSnapdragon, Antirrhinum majussun and trait tags
- Johnny's Selected SeedsSnapdragon Seedstrait tags
How the checking works, and what each standard covers, is on the verified plants page.
Comes in 10 varieties across 6 colors
Same genus, similar care - pick the color you are growing.
Compare every variety in the Snapdragons group
Every figure is the variety's own page fact. Tap a name to open it.
| Variety | Color | Blooms | Hardiness | Sun | Size (H × W) |
|---|---|---|---|---|---|
| Bronze | Orange | May–Sep | Annual (replant yearly) | Full sun | 2.5 ft × 1 ft |
| Burgundy | Red | May–Sep | Annual (replant yearly) | Full sun | 2.5 ft × 1 ft |
| Coral | Pink | May–Sep | Annual (replant yearly) | Full sun | 2.5 ft × 1 ft |
| Orange | Orange | May–Sep | Annual (replant yearly) | Full sun | 2.5 ft × 1 ft |
| Purple | Purple | May–Sep | Annual (replant yearly) | Full sun | 2.5 ft × 1 ft |
| Red | Red | May–Sep | Annual (replant yearly) | Full sun | 2.5 ft × 1 ft |
| Rocket | Pink | May–Sep | Annual (replant yearly) | Full sun | 3 ft × 1 ft |
| Rose | Pink | May–Sep | Annual (replant yearly) | Full sun | 2.5 ft × 1 ft |
| Snapdragonthis page | Pink | May–Sep | Annual (replant yearly) | Full sun | 2.5 ft × 1 ft |
| White | White | May–Sep | Annual (replant yearly) | Full sun | 2.5 ft × 1 ft |
| Yellow | Yellow | May–Sep | Annual (replant yearly) | Full sun | 2.5 ft × 1 ft |
Good to know about Snapdragon
Curated from university extensions, botanic gardens and other primary sources, with the source named on every note. A note reports what its source says; where that differs from a fact above, the fact above is this entry's stored value, and its mark says whether it has been checked.
Worth knowing
The closed, two-lipped 'dragon mouth' only opens when a large, strong bee (bumblebee or carpenter bee) lands and pries the lips apart, shutting out honeybees. per NC State and PLOS ONE
A cool-season bloomer
It flowers heavily in the cool of spring and fall, slows or stalls in high-summer heat, then rebounds as temperatures fall. Newer series tolerate heat better. per NC State and Clemson
One watering habit
Water at the base in the morning, not overhead in the evening, so leaves dry fast. This one habit controls both rust and downy mildew. per University of Illinois
Pinch and deadhead for more
Pinch young plants once to branch them, then deadhead spent spikes and cut tall varieties back after flowering to push new stems and prolong bloom. per Clemson and Mississippi State
Pet-safe and edible
Non-toxic to dogs, cats and horses, and the flowers are edible (if bitter), sometimes used as a garnish. A safe pick for family and pet gardens. per ASPCA and NC State
What pairs well with Snapdragon
Good companions share its growing conditions and add something it lacks: an earlier or later bloom, a lower carpet in front, or structure through winter.
Perennial Sunflower
Shares full sun and moderate water; overlaps, then carries the display into mid fall; its seed heads stand through winter, for structure and the birds; both offer pollinator forage.
Aster
Shares full sun and moderate water; overlaps, then carries the display into mid fall; its seed heads stand through winter, for structure and the birds; both offer pollinator forage.
Eastern Redbud
Takes full sun to part sun and moderate water; blooms in mid spring, before this one opens; both offer pollinator forage, in different months; echoes the pink.
Winterberry
Shares full sun and moderate to high water; blooms in mid fall as this one finishes; both offer pollinator forage, in different months; taller at 6.5 ft, for the layer behind it.
Joe Pye Weed
Shares full sun and moderate to high water; its seed heads stand through winter, for structure and the birds; both offer pollinator forage; taller at 6 ft, for the layer behind it.
Flowering Cherry
Shares full sun and moderate water; blooms in mid spring, before this one opens; both offer pollinator forage, in different months; a soft color beside the pink.
Rosemary
Shares full sun and low to moderate water; opens in early spring and overlaps into this one's season; evergreen, so the bed keeps its shape through winter; both offer pollinator forage.
Serviceberry
Takes full sun to part sun and moderate water; blooms in mid spring, before this one opens; both offer pollinator forage, in different months; its white flowers settle the pink.
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Drop this plant onto a 3D plan, see how it fills in, and watch your whole garden bloom across the year.